Declare ToString() Function in Golang

package main

import (
    "fmt"
)

type Student struct {
    Id    string
    Name  string
    Age   int
    Score float64
}

func (this Student) ToString() string {
    return fmt.Sprintf("id: %s\nName: %s\nAge: %d\nScore: %0.1f", this.Id, this.Name, this.Age, this.Score)
}

func main() {

    student := Student{
        Id:    "st01",
        Name:  "Name 1",
        Age:   20,
        Score: 5.6,
    }
    fmt.Println(student.ToString())

}      
        

Output

id: st01    
Name: Name 1
Age: 20     
Score: 5.6